GrimmSpeed 4-Piston Brake Caliper Kit

2013–2026 Scion FR-S / Subaru BRZ / Toyota 86 / GR86

Part #: GRM.1171.1.GRY

Overview

The GrimmSpeed 4-Piston Brake Caliper Kit is a high-performance upgrade designed specifically for the 326mm rotor setup on the Scion FR-S, Subaru BRZ, Toyota 86, and GR86 models from 2013 through 2026. This kit is engineered to provide enhanced braking power, improved pedal feel, and greater durability for enthusiasts seeking better control and confidence on both street and track. Featuring a sleek grey finish, these calipers not only perform exceptionally but also add a refined aesthetic to your vehicle’s braking system.

Ideal for drivers who demand more from their braking system, this kit offers a substantial improvement over the factory calipers, making it a perfect choice for spirited driving, autocross, and track day applications.

Key Features

Designed with precision and performance in mind, the GrimmSpeed 4-Piston Brake Caliper Kit offers the following key features:

• High-performance 4-piston caliper design for increased clamping force and improved braking response
• Compatible with 326mm rotors, ensuring optimal fitment and performance balance
• Durable grey powder-coated finish for corrosion resistance and a clean, aggressive look
• Lightweight construction to reduce unsprung weight and improve handling dynamics
• Precision-machined mounting surfaces for easy installation and secure fitment
• Improved brake pad contact and heat dissipation for consistent braking performance under demanding conditions
• Direct bolt-on replacement for factory calipers with no major modifications required

Construction & Design

GrimmSpeed’s 4-piston calipers are crafted from high-quality materials to ensure strength and longevity. The calipers are CNC-machined from billet aluminum, providing a perfect balance of rigidity and lightweight performance. This construction helps reduce flex under heavy braking, maintaining consistent pad contact and improving overall brake feel.

The grey powder-coated finish not only enhances corrosion resistance but also offers a subtle, sophisticated appearance that complements the factory brake components and wheel designs. The caliper pistons are designed to deliver even pressure distribution across the brake pads, maximizing braking efficiency and pad life.

Installation & Fitment

This brake caliper kit is engineered as a direct fit for the 326mm rotor setup on the Scion FR-S, Subaru BRZ, Toyota 86, and GR86 models spanning 2013 to 2026. Installation is straightforward for anyone with basic mechanical skills and common hand tools. The kit bolts directly onto the factory mounting points, requiring no custom brackets or modifications.

Brake lines and pads must be compatible with the 4-piston caliper design; it is recommended to use high-quality brake pads and stainless steel braided lines for optimal performance and safety. Professional installation is advised if you are unfamiliar with brake system work.

What's Included

• Two GrimmSpeed 4-piston brake calipers (grey finish)
• Mounting hardware for direct installation
• Brake pad retaining clips
• Detailed installation instructions

Ideal For

This caliper kit is perfect for enthusiasts and drivers who want to upgrade their braking system for improved stopping power and pedal feel without sacrificing reliability or fitment. It suits those who participate in track days, autocross events, or spirited street driving and desire a brake upgrade that matches the performance potential of their Scion FR-S, Subaru BRZ, Toyota 86, or GR86.